90131-ZY3-620 Honda BOLT, STUD (10X170) (Honda Code 6994073).

Table 1
J1939 Codes and Description CDL Code and Description Comments
3715-31
DPF Active Regeneration Inhibited Due to Permanent System Lockout E991 (3)
DPF Active Regeneration Inhibited Due to Permanent System Lockout The estimated soot load is high. The engine may not operate properly. Factory passwords are required to clear this code.
3719-0
DPF #1 Soot Loading Percent : High - most severe (3) E995 (3)
High DPF #1 Soot Loading The estimated soot load is high. Engine operation is limited to 60 second intervals when the Caterpillar Electronic Technician (ET) is not communicating with the ECM.
3719-16
DPF #1 Soot Loading Percent : High - moderate severity (2) E995 (2)
High DPF #1 Soot Loading The estimated soot load is high. The ECM shuts down the engine when this code becomes active for the first time. The engine can be started and operated. Engine power is gradually derated as the soot load increases.
Table 2
Associated Codes
E1045 (2)
E1026 (2)
E1025 (2)
E993 (2)
E1156 (1)
E593 (2)
E1239 (1)
E1026 (1)
E1300 (2)
102-18
3473-31
3474-14
3474-31
3609-15
3703-31
3711-31
3750-31
3716-31 Recommended Actions
Note: Engine operation must be kept to a minimum to minimize the amount of soot that is created. Follow the troubleshooting procedure to minimize the amount of engine operation.
Table 3
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Establish communication between Cat® Electronic Technician (ET) and the Electronic Control Module (ECM).
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Look for the following codes:
• E995 (2) or 3719-16
• E995 (3) or 3719-0
• E991 (3) or 3715-31
• E992 (3) or 3714-31
Codes
Result: A E991 (3) or 3715-31 code is present.
Proceed to Test Step 2.
Result: One of the following codes are present:
• E995 (2) or 3719-16
• E995 (3) or 3719-0
• E992 (3) or 3714-31
Proceed to Test Step 3.
2. E991 (3) or 3715-31 code
A. The E991 (3) or 3715-31 code indicates that the engine has continued to run after repeated warnings and engine shutdowns. The DPF must be replaced. Refer to the Disassembly and Assembly, "Diesel Particulate Filter - Remove and Install (Clean Emissions Module)" for the correct procedure.
DPF
Result: A E991 (3) or 3715-31 code is present.
Repair: Replace the DPF.
After the DPF has been replaced, clear the E991 (3) or 3715-31 code ( a factory password will be necessary).
Proceed to Test Step 3.
3. Associated Codes
A. Establish communication between Cat ET and the ECM.
B. Check Cat ET for any associated codes that are listed in Table 2.
Associated Codes
Result: An associated code is not active or logged.
Proceed to Test Step 4.
Result: An associated code is active or logged.
Repair: Troubleshoot any codes that are present before continuing with this procedure.
4. Manual DPF Regeneration
Note: Do not use the cab switch for stationary regeneration. The service tests provide enhanced diagnostics that are necessary for proper troubleshooting and repair.
A. Start a "Manual DPF Regeneration" in Cat ET.
Manual DPF Regeneration
Result: The "Manual DPF Regeneration" was successful.
Return the engine to service.
Result: The "Manual DPF Regeneration" not was successful.
Repair: Troubleshoot the diagnostic codes that are present.
If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).